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Uranium | Home Home Search Primary Menu Skip to contentWell-nighInFORMal E-News InFORM Scientists InFORMal Scientists InFORMal Science Photos Partners InFORM Monitoring InFORMal E-News Methods Citizen Science Gamma Spectroscopy Marine Biota Monitoring Methods for Other Radionuclides (WHOI CMER) Biota Oceanic Coastal Archived Results Radiation Research By Location Japan Fukushima NW Pacific N Pacific NE Pacific British Columbia North America Chernobyl By Sample Type Algae Atmospheric Human Marine Life Model Plants & Fungi Seawater Sediment By Isotope Cesium Iodine Plutonium Polonium Potassium Strontium Tellurium Uranium Xenon Presentations & Media Presentations Media Interviews Resources InFORMing Research FAQ Radiological Monitoring at the Radiation Protection Bureau of Health Canada IAEA Inter-laboratory Comparison Report 2014-2016 Official IAEA Report on the Fukushima DaiichiWreckingUNSCEAR 2017 Report on Levels and Effects of Radiation Exposure Methods for Other Radionuclides (WHOI CMER) Safety lessons learned from Fukushima: Part 1 – National Acadamies Report Safety lessons learned from Fukushima: Part 2 – National Acadamies Report Health Canada Observations Post-Disaster Canadian Radiological Monitoring Network Naturally Occurring Radioactive Materials Guidelines Search for: Category Archives: Uranium Fukushima, Uranium Possible Melted Fuel Seen for First Time at Fukushima Plant July 21, 2017 dr.jonathan.kellogg Leave a scuttlebutt by Mari Yamaguchi July 21, 2017 Originally published by the Associated Press TOKYO (AP) — An underwater robot captured images of solidified lava-like rocks Friday inside a damaged reactor at Japan’s crippled Fukushima nuclear plant, spotting for the first time what is believed to be nuclear fuel that melted six years ago. Continue reading Possible Melted Fuel Seen for First Time at Fukushima Plant → Advertisements DecommissioningFukushimaMelted FuelRobotUnit3 Fukushima, Model, Peer Reviewed, Plutonium, Uranium Plutonium Inventories at Fukushima Dai-ichi Nuclear Power Plant and Mixed Oxide (MOX) Fuel at Unit 3 November 25, 2014 fukushimainform Leave a scuttlebutt By Jay T. Cullen The purpose of this post is to provide estimates of the plutonium (Pu) isotopes present at the Fukushima Dai-ichi nuclear power plant (NPP) at the whence of the disaster in March 2011. The post is part of an ongoing effort to communicate facts well-nigh Fukushima obtained through scientific study of the impact of the meltdowns on the environment. Comments on this site and in other public forums highlight the fact that Unit 3 at the NPP was urgent mixed oxide (MOX) fuel at the time of the wrecking which, considering it is enriched in Pu, suggests that these releases are potentially increasingly harmful. Here I report estimates of Pu present in the reactors (Units 1, 2 and 3) and spent fuel pools (Units 1-4) at the site based on burnup calculations.Consideringfission of low enriched uranium (LEU) fuel produces Pu isotopes during operation there was a significant value of Pu on site in Units 1-4. During extended operation a MOX fuel urgent reactor can produce multiple times the Pu of LEU but this was not so at the time of the Fukushima meltdowns. The value of spare Pu present due to Unit 3’s MOX fuel is small compared to the other reactor cores and the inventory of the spent fuel pools. The differences between environmental impact of MOX versus LEU reactor cadre meltdown in this specimen are small. Estimates of the release of Pu isotopes from Fukushima, based on measurements of air, soil and water suggest 100,000 fold less was unconcentrated to the environment compared to Chernobyl and 5,000,000 fold lower than releases from nuclear weapons testing in the 20th century. Continue reading Plutonium Inventories at Fukushima Dai-ichi Nuclear Power Plant and Mixed Oxide (MOX) Fuel at Unit 3 → 238-U239-PuFukushimaMeltdownRadiationRadionuclidesReactorReleaseSpent fuel View Fukushima-InFORM-257383817784613’s profile on FacebookView @FukushimaInFORM’s profile on TwitterView UCRqxVIr3s5Yc-djXahyBunA’s profile on YouTube Recent Posts Voyage Reflections Friday the 13th was the Luckiest Day Ever Into the Storm Advertisements Funded by Blog at WordPress.com. Privacy & Cookies: This site uses cookies. By standing to use this website, you stipulate to their use. To find out more, including how to tenancy cookies, see here: Cookie Policy